Looking for a sandbox/factory game with RNG loot/crates
Hello! I'm looking for a sandbox factory/tycoon game with a specific type of RNG progression.
Ideally, I want a game where you build your own factory by placing things like droppers/miners, conveyors, processors/upgraders, furnaces, etc., but instead of simply unlocking better machines and buying them from a normal shop, you earn money and spend it on crates/chests/packs that give you random machines or items.
For example, I could spend $10,000 on a crate and get a mediocre common dropper, or get lucky and pull a really rare/ powerful machine that completely changes or improves my factory. I'd love if there were different rarities and genuinely rare items to chase.
Basically, I'm looking for this gameplay loop:
Build factory → make money → buy/open crates → get random machines/items → improve or redesign factory around what I pulled → make more money → repeat
I really enjoy the excitement of gambling my earned currency on random items and then figuring out how to use whatever I get. I find factory games where you simply unlock everything in a predictable order and save enough money to buy the next upgrade a little boring.
Preferably on PC/Steam.
It doesn't have to match this description perfectly. If you know anything with sandbox/factory building and a strong RNG/loot aspect, I'd love to hear about it!